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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id c32-20020a9d27a3000000b00636d0984f5asm998008otb.11.2022.08.10.21.44.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Aug 2022 21:44:27 -0700 (PDT) Date: Wed, 10 Aug 2022 21:44:16 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.anvils To: Theodore Ts'o cc: Andrew Morton , Hugh Dickins , Radoslaw Burny , linux-mm@kvack.org Subject: Re: [PATCH -v3] mm/shmem: support FS_IOC_[SG]ETFLAGS in tmpfs In-Reply-To: <20220715015912.2560575-1-tytso@mit.edu> Message-ID: References: <20220714022448.2430819-1-tytso@mit.edu> <20220715015912.2560575-1-tytso@mit.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1660193068; a=rsa-sha256; cv=none; b=DtGt12AZTAOSgwT167FVZ6syJt5HV3afLUT7zllk+N7AdFcZr8KhvLFE0n3+t8uymbKwkh 6Z1/Ac00HOIIwWkNtnRq6hsprpSYIYBeusM/m611IsuBxnbTM52OB5WQAPY7FybFgQhfII X5d3UFbhMShity1zqg52R/d1Yem1OyU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1660193068; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=LOd+kLVKGgzQ1riTT0Y8QWA+v+GguKy2IEg78FYzLOc=; b=F3w3Xu8fcKc9tjZ9VCarrq5DyxubdSSmZiDUG5sOB9j3q9Kjhjc/s2JRIgmCJMH+Z7MFi3 emPPnIR5IpldOcpy3oRHPYCCseA9rmVLqV0SPFeZntcLfSb6SO+33cEIJsTPZwGoz/rY1T etWFIf5hjIcKmajSnbfogJzncqhjzxg= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=bZQNhPM5; spf=pass (imf25.hostedemail.com: domain of hughd@google.com designates 209.85.160.50 as permitted sender) smtp.mailfrom=hughd@google.com; dmarc=pass (policy=reject) header.from=google.com X-Stat-Signature: e7zts9pf1rqdmh9g6sithut84pj4jxhm X-Rspamd-Queue-Id: DF153A0062 Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=bZQNhPM5; spf=pass (imf25.hostedemail.com: domain of hughd@google.com designates 209.85.160.50 as permitted sender) smtp.mailfrom=hughd@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1660193068-250719 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, 14 Jul 2022, Theodore Ts'o wrote: > This allows userspace to set flags like FS_APPEND_FL, FS_IMMUTABLE_FL, > FS_NODUMP_FL, etc., like all other standard Linux file systems. > > Signed-off-by: Theodore Ts'o Many thanks for adding the chattr support to tmpfs: I'd rather wanted to do that for a long time, but it's much better coming from you who actually have a use for it. But I do have some adjustments to make, coming up now... Hugh